Distilleria Deta has a continuous distillation system made up of vertical and horizontal columns in copper and steel.
Using a dealcoholisation system, the alcoholic liquid is extracted from the fermented marc and then it is distilled and rectified to eliminate the residual impurities in the alcohol.
The Distillation Plant is used to produce all types of Grappa, Alcohol and Spirits.
The residual material from distillation of the marc and wine lees (dealcoholized stillage) is sent to the detartarisation process through which Calcium Tartrate is obtained.
The stillage, which contains potassium bitartrate, has calcium carbonate and calcium chloride added to it, thereby obtaining the formation of Calcium Tartrate crystals.
These are separated from the mother liquors through hydrocyclones and centrifuges and then dried in order to prevent the decomposition of the organic part.
Lastly, the Calcium Tartrate produced is stored in special silos until it is used by Distillerie Mazzari S.p.A for the production of Natural Tartaric Acid.
Operating in respect of the environment and the community is the top priority for Distilleria Deta.
The company has an anaerobic digestion system in which the process stillage is treated.
Biological gas (Biogas) is produced by the anaerobic digestion process which, after being purified, is sent to the endothermic engine located inside the distillery to produce the electricity that powers the company plant.
The digested material undergoes separation of the solid fraction from the liquid through the flotation system.
The solid fraction is filtered in belt presses and stored in special indoor greenhouses for subsequent agricultural re-use (organic nitrogen fertiliser), whereas the water obtained from the flotation and dehydration processes is sent to the municipal purifier.
Thermal power plant and Cogeneration
The depleted marc, in other words, drained of its alcoholic and tartaric potential, is dried in order to separate the skins from the grape seeds.
The skins, rich in cellulose, are used at Distilleria Deta as an energy source through their combustion in the central heating system and subsequent production of the steam required to power the production plants, thereby avoiding the use of fossil fuels.
The fumes deriving from the drying and subsequent combustion in the boiler of the marc are treated using an electrofilter: this allows the emissions into the atmosphere to be reduced to a minimum in full compliance with the limits set by the prevailing public authority.
Distilleria Deta also produces electricity by cogeneration through an endothermic engine fuelled by Biogas produced in the digestion system.
The electricity obtained is the kind of energy defined as being from renewable sources.